Archivio Istituzionale della RicercaThis paper presents a Doherty power amplifier working from 3.1 GHz to 3.6 GHz. It adopts 10 W packaged GaN HEMTs from Cree/Wolfspeed and achieves a saturated output power in excess of 43.4 dBm. Saturated efficiency ranges from 57.7 % to 75.2 %, while efficiency at 6 dB back-off is between 44.2 % and 59.8 %. System-level simulations at 3.5 GHz adopting a 16QAM signal with 5 MHz bandwidth and 4 dB peak to average power ratio showed an adjacent channel power ratio of -28 dBc/Hz without pre-distortion, at an average output power of 43 dBm and with an average efficiency of 71 %.
3.1-3.6 GHz 22 W GaN Doherty Power Amplifier / Estebsari, Motahhareh; Nasri, Abbas; Piacibello, Anna; Ramella, Chiara; Camarchia, Vittorio; Pirola, Marco. - STAMPA. - (2020), pp. 424-426. (Intervento presentato al convegno 2020 23rd International Microwave and Radar Conference (MIKON) tenutosi a Warsaw, Poland nel 5-8 Oct. 2020) [10.23919/MIKON48703.2020.9253823].
3.1-3.6 GHz 22 W GaN Doherty Power Amplifier
Estebsari, Motahhareh;Nasri, Abbas;Piacibello, Anna;Ramella, Chiara;Camarchia, Vittorio;Pirola, Marco
2020
Abstract
This paper presents a Doherty power amplifier working from 3.1 GHz to 3.6 GHz. It adopts 10 W packaged GaN HEMTs from Cree/Wolfspeed and achieves a saturated output power in excess of 43.4 dBm. Saturated efficiency ranges from 57.7 % to 75.2 %, while efficiency at 6 dB back-off is between 44.2 % and 59.8 %. System-level simulations at 3.5 GHz adopting a 16QAM signal with 5 MHz bandwidth and 4 dB peak to average power ratio showed an adjacent channel power ratio of -28 dBc/Hz without pre-distortion, at an average output power of 43 dBm and with an average efficiency of 71 %.
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https://hdl.handle.net/11583/2854542